Place the rolled oats in a high-speed blender and pulse until they reach a fine, flour-like consistency.
Add the liquid egg whites, Greek yogurt, half of the banana, baking powder, cinnamon, vanilla extract, and sea salt to the blender; process until the batter is completely smooth.
Heat a large non-stick skillet over medium heat and lightly coat with half of the coconut oil.
Pour the batter into the skillet to form three or four small pancakes, cooking for 2-3 minutes per side until the edges are set and the surfaces are golden brown.
While the pancakes cook, slice the remaining half of the banana into thin rounds.
Remove the pancakes from the skillet, wipe it clean, and add the remaining coconut oil.
Sauté the banana slices in the skillet for 1-2 minutes per side until they are caramelized and fragrant.
Stack the pancakes on a plate and top with the warm caramelized banana slices immediately.